Editor UI for godex not working

[AlexCheero]

• No ECS tab in editor from the latest master
  from previous version:
• Unable to add systems or change their order in "Pipeline view"
• Unable to find any custom system in "Add system" window, opened by the button "Use feature"
• No input reaction for buttons "New component" and "Add variable" in "Component and Databag manager" window, opened by the "Use feature" button
• Unable to find any custom component in the "Component and Databag manager" window

[fire]

#296 was merged.